Which of the following properties are characteristic of lyophobic sols ?
1. low viscosity, 2.high viscosity , 3. reversibility and 4. coagulation by electrolytes at low concentration
Select the correct answer using the codes given below:
A. 2,3 and 4
B. 2and 3 only
C. 1 and 4 only
D. 1 and 3 only